Donald Trump says he has fired a top election official who contradicted the US president's claims of voter fraud, APA reports citing BBC.
President Trump said he "terminated" Cybersecurity and Infrastructure Security Agency (Cisa) chief Chris Krebs for his "highly inaccurate" remarks on vote integrity.
Mr Trump has refused to concede the US election, making unsubstantiated claims of "massive" voter fraud.
Election officials said the vote was the "most secure" in US history.
Last week the president fired Department of Defense Secretary Mark Esper, amid reports that he doubted the Pentagon chief's loyalty.
There is speculation in Washington DC that before Mr Trump leaves office in January, CIA director Gina Haspel and FBI director Christopher Wray could also be for the chopping block.